Re: Boating the Upper Chesapeake
FINALLY splashed the 'ol gal this evening! Took her out for a short shakedown cruise down to Turkey Point and back with the new prop. Unfortunately, the old gas in her caused a nasty case of detonation when I tried to open her up, even though I put 10 gallons of premium in her before taking off.

I could open her up taking off, but once the engine hit about 3200rpm, the detonation started and I had to back out of the throttle. Tried to open up the secondaries, but no-go, big time detonation. So I settled for a nice cruise right at 3000 rpm with no detonation.
I'm not sure if that new 20' pitch 4 blade prop contributed to the problem or not, but it sure made a world of difference! Slow speed steering was much more responsive, espicially in reverse; and although it took a bit longer to get on plane, the old gal had a nice cruse speed of 30 mph @ 3000rpm while getting 3.2mpg!

With the old 15" pitch prop she jumped on plane, but cruised at 25mph @3800rpm while getting 2.5mpg.
I am going to put an 18" pitch 4 blade prop that I have laying around on her until I burn the rest of the old gas out and add a couple of bottles of 104+ to help. Once I get the old gas out and put fresh in, it will be time to try a few WOT runs to see what prop I need.